diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/alpha/kernel/pci_iommu.c | 32 | ||||
| -rw-r--r-- | arch/mips/pci/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/pci/pci-dac.c | 79 | ||||
| -rw-r--r-- | arch/x86_64/kernel/pci-dma.c | 3 |
4 files changed, 7 insertions, 109 deletions
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index 28c84e5..6b07f89 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -207,6 +207,10 @@ iommu_arena_free(struct pci_iommu_arena *arena, long ofs, long n) p[i] = 0; } +/* True if the machine supports DAC addressing, and DEV can + make use of it given MASK. */ +static int pci_dac_dma_supported(struct pci_dev *hwdev, u64 mask); + /* Map a single buffer of the indicated size for PCI DMA in streaming mode. The 32-bit PCI bus mastering address to use is returned. Once the device is given the dma address, the device owns this memory @@ -897,7 +901,7 @@ iommu_unbind(struct pci_iommu_arena *arena, long pg_start, long pg_count) /* True if the machine supports DAC addressing, and DEV can make use of it given MASK. */ -int +static int pci_dac_dma_supported(struct pci_dev *dev, u64 mask) { dma64_addr_t dac_offset = alpha_mv.pci_dac_offset; @@ -917,32 +921,6 @@ pci_dac_dma_supported(struct pci_dev *dev, u64 mask) return ok; } -EXPORT_SYMBOL(pci_dac_dma_supported); - -dma64_addr_t -pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, - unsigned long offset, int direction) -{ - return (alpha_mv.pci_dac_offset - + __pa(page_address(page)) - + (dma64_addr_t) offset); -} -EXPORT_SYMBOL(pci_dac_page_to_dma); - -struct page * -pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr) -{ - unsigned long paddr = (dma_addr & PAGE_MASK) - alpha_mv.pci_dac_offset; - return virt_to_page(__va(paddr)); -} -EXPORT_SYMBOL(pci_dac_dma_to_page); - -unsigned long -pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr) -{ - return (dma_addr & ~PAGE_MASK); -} -EXPORT_SYMBOL(pci_dac_dma_to_offset); /* Helper for generic DMA-mapping functions. */ diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile index f26ede0..c58bd3d 100644 --- a/arch/mips/pci/Makefile +++ b/arch/mips/pci/Makefile @@ -2,7 +2,7 @@ # Makefile for the PCI specific kernel interface routines under Linux. # -obj-y += pci.o pci-dac.o +obj-y += pci.o # # PCI bus host bridge specific code diff --git a/arch/mips/pci/pci-dac.c b/arch/mips/pci/pci-dac.c deleted file mode 100644 index 0f0ea1b..0000000 --- a/arch/mips/pci/pci-dac.c +++ /dev/null @@ -1,79 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com> - * Copyright (C) 2000, 2001, 06 Ralf Baechle <ralf@linux-mips.org> - * swiped from i386, and cloned for MIPS by Geert, polished by Ralf. - */ - -#include <linux/types.h> -#include <linux/dma-mapping.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/string.h> - -#include <asm/cache.h> -#include <asm/io.h> - -#include <dma-coherence.h> - -#include <linux/pci.h> - -dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev, - struct page *page, unsigned long offset, int direction) -{ - struct device *dev = &pdev->dev; - - BUG_ON(direction == DMA_NONE); - - if (!plat_device_is_coherent(dev)) { - unsigned long addr; - - addr = (unsigned long) page_address(page) + offset; - dma_cache_wback_inv(addr, PAGE_SIZE); - } - - return plat_map_dma_mem_page(dev, page) + offset; -} - -EXPORT_SYMBOL(pci_dac_page_to_dma); - -struct page *pci_dac_dma_to_page(struct pci_dev *pdev, - dma64_addr_t dma_addr) -{ - return pfn_to_page(plat_dma_addr_to_phys(dma_addr) >> PAGE_SHIFT); -} - -EXPORT_SYMBOL(pci_dac_dma_to_page); - -unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev, - dma64_addr_t dma_addr) -{ - return dma_addr & ~PAGE_MASK; -} - -EXPORT_SYMBOL(pci_dac_dma_to_offset); - -void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, - dma64_addr_t dma_addr, size_t len, int direction) -{ - BUG_ON(direction == PCI_DMA_NONE); - - if (!plat_device_is_coherent(&pdev->dev)) - dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len); -} - -EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu); - -void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, - dma64_addr_t dma_addr, size_t len, int direction) -{ - BUG_ON(direction == PCI_DMA_NONE); - - if (!plat_device_is_coherent(&pdev->dev)) - dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len); -} - -EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device); diff --git a/arch/x86_64/kernel/pci-dma.c b/arch/x86_64/kernel/pci-dma.c index 9f80aad..90f6315 100644 --- a/arch/x86_64/kernel/pci-dma.c +++ b/arch/x86_64/kernel/pci-dma.c @@ -22,8 +22,7 @@ EXPORT_SYMBOL(bad_dma_address); int iommu_bio_merge __read_mostly = 0; EXPORT_SYMBOL(iommu_bio_merge); -int iommu_sac_force __read_mostly = 0; -EXPORT_SYMBOL(iommu_sac_force); +static int iommu_sac_force __read_mostly = 0; int no_iommu __read_mostly; #ifdef CONFIG_IOMMU_DEBUG |
